@bajjerfan: I'm glad to hear you had a good experience with Mohs procedures and you tolerated your local anesthetic well. In some cases, people undergoing such procedures may require additional oral sedatives or pain relievers to assist with anxiety or discomfort, in which case operatating motor vehicles afterwards would not be advised. Additonally, if the area treated was on the face with the bandaging required in the area, there's potential vision could be impaired. This is why it is always wise to check directly with the medical professional performing the procedure to see what post-op instructions are indicated in each case. Hope that helps in understanding why in some cases a driver is needed afterwards.